There's been a few hip hop artists named but considering how big hip hop is now and how many new artists there are I'm surprised there isn't more.

I think Kendrick & A$AP Rocky have a chance of returning, maybe Flying Lotus as Captain Murphy. Big Boi (Don't know if it's gonna be Outkast, solo or with Little Dragon &/or Phantogram) would be amazing and although Wu-Tang is rumoured I doubt they'd come, even if it'd be amazing (Please no ODB hologram). Besides that it'd be cool to see Danny Brown, Blu (Solo or with Exile), Big KRIT, TNGHT, The Roots, Robert Gasper Experiment (Obviously not just hip hop but rappers would probably show up), Mos Def, Onra, DJ Quik, Madlib, A-Trak, Trinidad James, Oddisee, Cunninlynguists, Curren$y, Exile, Earl Sweatshirt, Jay Electronica and Danny!